• 60 Day Returns Policy
  • Over 500k Happy Customers
  • Worldwide Delivery
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HP-Compaq Envy 800 Desktop Compatible RAM & Memory Upgrades

HP-Compaq

  • Fast Free UK Delivery

    Fast Free UKDelivery

  • 100% Compatibility

    100%Compatibility

  • Limited Lifetime Warranty

    Limited LifetimeWarranty

  • 60 Day Money Back Guarantee

    60 Day Money BackGuarantee

  • Daily Price Checks

    Twice DailyPrice Checks

  • Online Since 1997

    Online Since1997

  • Large Stock Holding

    LargeStock Holding

Memory Installation Guides

Memory is one of the simplest upgrades that you can perform on your computer. To make it even easier our support team have created both installation videos and a written guide for you to follow. 

Should you have any issues with your installation please see our FAQ page or contact our support team via live chat or at support@offtek.co.uk. 

Installation Guide Installation Guide

Select your Envy 800 Series Model below:

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Popular Products

Envy 800-000er

8GB 240 Pin 1.5v DDR3 PC3-12800 Non-ECC Dimm

8GB Module - 240 Pin 1.5v DDR3 PC3-12800 Non-ECC Dimm For Illustration Purposes Only
  • Dimm Speed: DDR3-12800 (PC3-1600)
  • Dimm Type: Non-ECC
  • Product code: FT8GLK64V4U
  • Storage Capacity: 8GB Module
  • Form Factor: 240 Pin Dimm

Want it by Friday?
Order within the next 1 hours, 38 minutes, and select Express Delivery.

£39.59 inc. VAT

Free Delivery Available More Information

Envy 810-000ee

2GB 240 Pin 1.5v DDR3 PC3-12800 Non-ECC Dimm

2GB Module - 240 Pin 1.5v DDR3 PC3-12800 Non-ECC Dimm For Illustration Purposes Only
  • Dimm Speed: DDR3-12800 (PC3-1600)
  • Dimm Type: Non-ECC
  • Product code: FT256MLK64V4U
  • Storage Capacity: 2GB Module
  • Form Factor: 240 Pin Dimm

Want it by Friday?
Order within the next 1 hours, 38 minutes, and select Express Delivery.

£17.83 inc. VAT

Free Delivery Available More Information

Envy 810-109

4GB 240 Pin 1.5v DDR3 PC3-12800 Non-ECC Dimm

4GB Module - 240 Pin 1.5v DDR3 PC3-12800 Non-ECC Dimm For Illustration Purposes Only
  • Dimm Speed: DDR3-12800 (PC3-1600)
  • Dimm Type: Non-ECC
  • Product code: FT512MLK64V4U
  • Storage Capacity: 4GB Module
  • Form Factor: 240 Pin Dimm

Want it by Friday?
Order within the next 1 hours, 38 minutes, and select Express Delivery.

Was £28.40. SAVE 18%

£23.34 inc. VAT

Free Delivery Available More Information

Lifetime Warranty

All OFFTEK memory is backed by our full lifetime warranty. We obsess over our products so you do not have to. Our team constantly strive to ensure that all our memory is of the highest quality but should you ever have any issues with your purchase you have the peace of mind that you can return your product for a replacement if the need arises.

Top Brands

  • Samsung
  • Hynix
  • Micron
We have close relationships with all of the top tier RAM memory manufacturers which enables us to provide a constant supply of the highest quality products. This in effect means compatible, reliable RAM and most importantly great prices, all backed by a limited lifetime warranty. If you require a specific brand of memory then please do not hesitate to contact one of our sales team.

Guaranteed Compatibility

Over the years we have taken immense care in creating one of the most in depth memory configurators. We do this to ensure that when you purchase a memory upgrade from OFFTEK you are confident that the upgrade is 100% compatible with your system. Should you have any questions prior to ordering your upgrade we have technicians on hand via live chat, email or phone who will be able to answer any queries you may have.

We take the time to look into each machine to ensure that we offer all sizes and speeds that the machine is able to take not just the latest specification that has been released. We believe that offering all options for machines provides a 100% guarantee that the memory with function with your original memory module efficiently.

Cannot find your HP-Compaq Desktop range or series? Don't worry there is still a good chance we sell a compatible upgrade. Feel free to call us, use our live chat service or use our 'model not listed form'

Delivery Options

UK Delivery

  • Free Delivery (4-5 Days)
    £0.00
  • Fast Delivery (1-2 Days)
    £0.95
  • Next Working Day (Order by 4PM)
    £5.95
  • Saturday Delivery (Order by 4PM)
    £10.50
  • Next Working Day 9AM (Order by 4PM)
    £15.50

International Delivery

  • We now deliver to over 200 countries worldwide with DHL at incredibly low prices.
More info

Free Returns

  • Subject to exceptions, Offtek is happy to exchange or refund your purchase within 60 days of delivery. Please check here for more details on our returns policy and exceptions.
See more information

Brands we Supply

  • Samsung
  • Hynix
  • Micron
  • Elpida
  • Intel
  • Kingston
  • Transcend
  • Western Digital

Why buy from offtek

Laptop Memory Upgrading

Matched Ram upgrades for your specific model

Offtek provides matched upgrades for new and legacy machines. Every one of our RAM modules are tested to ensure that not only are they compatible with the machine but also that they perform in a wide range of different environmental conditions. This allows us to back our modules with a limited lifetime warranty.

Established in 1996, OFFTEK is trusted by many of the UK's best known household names as their number ONE source for ram upgrades.
  • BT
  • DHL
  • Pizza Express
  • Google
Laptop Memory Upgrading

Misson critical or movie night we have your upgrade sorted

Our team is made up of memory specialists with an average of 9 years experience in the RAM industry. We offer upgrades for not only the latest machines on the market but just as important those legacy machines that you need to keep running.

RAM is extremely important in ensuring your machine operates at its optimum performance. Our upgrades ensure that your computer will be performing at its best for years to come.
  • Fast Free UK Delivery

    Fast Free UKDelivery

  • Over 500,000 Happy Customers

    Over 500,000Happy Customers

  • Technical Staff with Over 9 years of experience

    Technical Staff With Over 9years of experience

  • 60 Day Money Back Guarantee

    60 Day Money BackGuarantee

  • Daily Price Checks

    Twice DailyPrice Checks

  • Dedicated Account Managers

    DedicatedAccount Managers

Read More

Technical Staff with Over 9 years of experience

We have dedicated and highly trained experts with an average of 9 years experience. They are here to help you from purchase through to installation. We use a number of contact methods so you can speak to one of our specialists with ease.

Fast Free UK Delivery

We offer FAST FREE UK Delivery on all orders with 96% of orders dispatched same day. For those that cannot wait we also offer faster delivery options including next day.

60 Day Money Back Guarantee

Not 100% happy with your order then return it to us under our No Quibble 60 Day Money Back Guarantee. Worried you might have made the wrong choice? With our no quibble return policy you can send it back to us and get a full refund up to 60 days after you've received your order. Whether you've picked the wrong product or just changed your mind you can send your order back to us and you'll get all your money back.

Twice Daily Price Checks

Our Price Promise commitment means that you can buy from us with confidence.

Our team works hard to ensure that you not only have peace of mind in the fact that the memory you order is 100% compatible but that our price is also the lowest for that product.

We check our prices daily against all our competitors to ensure that you are getting the best deal.

Experts On Hand

We have dedicated and highly trained experts with an average of 7 years experience. They are here to help you from purchase through to installation. We use a number of contact methods so you can speak to one of our specialists with ease.

Limited Lifetime Warranty

Feel confident that your memory will last a lifetime. Our limited lifetime warranty guarantees that if your memory should ever fail we will replace or repair the product free of charge provided that it is still manufactured. Please note that the lifetime warranty refers only to memory modules and not flash memory or storage products. Please see the individual 'product details' for warranties specific to each product.

100% Compatibility

Every memory product matched specifically to your machine is individually tested to guarantee reliability and 100% compatibility with your computer and operating system.

Online Since 1997

Offtek has been supplying memory online since 1997 with over 500,000 happy customers. Well, maybe the odd one does'nt like us ;)

We have always been passionate about providing our customers with the tools and information to update their systems in the simplest manner. Early in 1996 we took on the challenge to find the type of memory compatible with every computer ever built. Hence our first memory configurator was born. Our constant daily updates allow our customers to easily select the correct memory for their machines and that objective is as important today as it was when the idea was first broached across a kitchen table in central Birmingham

Large Stock Holding

As one the largest memory distributors in Europe, our large stock holding allows us to offer next day delivery on a wide range of products.

Environmentally Friendly

If you have no need for your old memory after you have upgraded to one of our larger/faster modules, we will recycle this for you free of charge under the WEEE directive.

The advantages of adding more Ram Memory

Installing a memory module is one of the simplest upgrades that can be done to a computer

There is no configuration, no sitting around waiting for things to update and backup. It is simply plug and play! By adding more Ram memory into you laptop, desktop or server you will be doing the following:
  • Improving the overall performance of the machine
  • Allowing for increased multitasking
  • Extending the life of the machine
  • Producing faster boot times
  • Increasing productivity
  • Decreasing latency in gaming
Adding memory is the easiest upgrade available for your machine for the best increase in performance. If you are unsure on how to upgrade your machine no problem take a look at our detailed guides on how to install your new Laptop or Desktop Memory upgrade.

Upgrading Device Memory
Compatibility Guarantee

Guaranteed Compatibility

Over the years we have taken immense care in creating one of the most in depth memory configurators. We do this to ensure that when you purchase a memory upgrade from OFFTEK you are confident that the upgrade is 100% compatible with your system. Should you have any questions prior to ordering your upgrade we have technicians on hand via live chat, email or phone who will be able to answer any queries you may have.

We take the time to look into each machine to ensure that we offer all sizes and speeds that the machine is able to take not just the latest specification that has been released. We believe that offering all options for machines provides a 100% guarantee that the memory with function with your original memory module efficiently.